JPH05167623A - Packet transmission system - Google Patents

Abstract

PURPOSE:To prevent a transfer speed of a packet signal from being limited by a throughput of a packet exchange network in the packet transmission system. CONSTITUTION:The packet transmission system differs from a conventional packet transmission system in such points that a packet distribution section 18 by which a packet signal generated from each of packet generating sections 121-12n is distributed to plural sender side logic channels 131-13n is provided between the packet generating sections 121-12n and the sender side logic channels 131-13n in the packet transmission system 10. Moreover, a packet collection section 19 collecting a packet signal received from receiver side logic channel groups 151-15n is provided between the receiver side logic channel groups 151-15n and data re-configuration section groups 161-16n.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packet transmission system, and more particularly to a packet transmission system using a plurality of logical channels via a packet switching network.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a conventional example of a packet transmission system of this type.

The packet transmission system 20 uses a data stream.
N data generators 21 for generating reams₁~ 21_n
(First data generation unit 21₁ , Second data generator
21 ₂ , N-th data generator 21_n Only shown) and each
Data generator 21₁~ 21_nData stream generated by
N packets, each of which generates a packet signal.
Generating unit 22₁~ 22_n(First data generation unit 22
₁ , Second data generator 22₂ , Nth data generation
Part 22_n (Only shown) and each packet generator 22₁~ 22_n
Each of the packet signals generated in
Sender logical channel 23₁~ 23_n(First sender theory
Science channel 23₁ , Second sender logical channel 23
₂ , Nth sender logical channel 23_n (Only shown),
Each transmitting side logical channel 23₁~ 23_nMore packet signal
Input packet switching network 24 and packet switching network 24
M receivers to which packet signals are respectively input
Logical channel 25₁~ 25_m(First receiving logical channel
Le 25₁ , Second receiver logical channel 25₂ , Mth
Receiver logical channel 23_m Only shown) and each receiver theory
Science channel 25₁~ 25_mPacket signal input more
Data streams are reconstructed from m data
Data reconstruction unit 26₁~ 26_m(First data reconstruction unit 2
6₁ , Second data reconstruction unit 26₂ , Mth data
Reconstruction unit 26_m(Only shown), and each data reconstruction unit 26₁~
26_mReceives each reconstructed data stream in
M data receiving units 27₁~ 27_m(The first device
Data receiving unit 27₁ , Second data receiving unit 27₂ , M number
Eye data receiving unit 27_m (Only shown).

[0004]

[SUMMARY OF THE INVENTION However, in the conventional packet transmission system 20 described above, the packet signal generated by the packet generation unit 22 ₁ through 22 _n are connected to each packet generating unit 22 ₁ through 22 _n Since the packets are transmitted to the packet switching network 24 through the specific transmission-side logical channels 23 ₁ to 23 _n , the packet signal transfer rate is limited to the throughput of the packet switching network 24.

It is an object of the present invention to provide a packet transmission system in which the packet signal transfer rate is not limited by the throughput of the packet switching network.

[0006]

SUMMARY OF THE INVENTION A packet transmission system of the present invention is directed to a data generating unit group in which a data stream is generated, and a packet generating a packet signal from the data stream generated in each data generating unit. A generation unit group, a transmission side logical channel group to which the packet signals generated by the respective packet generation units are respectively transmitted,
A packet switching network to which the packet signal is input from each of the transmission side logical channels, a reception side logical channel group to which the packet signal is input from the packet switching network, and the input to each of the reception side logical channels. In a packet transmission system including a data reconstruction unit group in which the data streams are respectively reconstructed from a packet signal, and a data reception unit group in which the data streams reconstructed by the data reconstruction units are respectively received, A packet distribution unit that is provided between the packet generation unit group and the transmission side logical channel group and that distributes the packet signal generated by each of the packet generation units to a plurality of transmission side logical channels; From the receiving side logical channel group provided between the receiving side logical channel group and the data reconstructing unit group It is and a packet collection unit packet signals are collected to be entered.

Here, the data stream may be transmitted and received bidirectionally.

[0008]

The packet transmission system of the present invention has a packet distribution unit between the packet generation unit group and the transmission side logical channel group, and a packet collection unit between the reception side logical channel group and the data reconstruction unit group. By having, the packet distributor divides one packet signal into a plurality of packets,
It can be transmitted simultaneously via multiple sender logical channels and multiple receiver logical channels.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a packet transmission system of the present invention.

The packet transmission system 10 of this embodiment is
It differs from the conventional packet transmission system 20 shown in FIG. 2 in the following points.

(1) Packet signals generated by the respective packet generators 12 _{1 to} 12 _n are transmitted to a plurality of transmission side logical channels 13
_The packet distribution unit 18 distributed to _{1 to} 13 _n includes a packet generation unit group 12 _{1 to} 12 _n and a transmission side logical channel group 13 ₁ to
13 _n .

(2) Reception side logical channel group 15 ₁ to 15 _n
The packet collection unit 19 that collects the packet signals respectively input from the reception side logical channel groups 15 ₁ to 15 _n
And the data reconstruction unit groups 16 _{1 to} 16 _n .

Next, the first data generators 11 ₁ to 2
The operation of the packet transmission system 10 when transmitting data to the _second data receiving unit 17 ₂ will be described.

The data stream generated by the _first data generating unit 11 ₁ is output to the _first packet generating unit 12 ₁ , and the packet generating unit 12 ₁ has a fixed size with a sequence number. After being divided into packet signals,
It is output to the packet distributor 18. Packet distributor 18
Distributes a packet signal having a fixed size with a sequence number to a plurality of transmission side logical channels 13 _{1 to} 13 _n and outputs it to the packet switching network 14. Packet switching network 14
Is the packet switching network 14 for each of the transmitting side logical channels 13 _{1 to} 13 _n and the receiving side logical channels 15 ₁ to 15 _n.
The packet signal is transmitted with a unique throughput.
The packet collection unit 19 includes the reception side logical channel groups 15 ₁ to
The respective packet signals input from 15 _n are collected and output to the _second data reconstructing unit 16 ₂ . The data reconstructing unit 16 ₂ converts the input packet signal into a continuous data stream by reconnecting the packet signals according to the sequence number, and the second data receiving unit 17 ₂
Output to.

Therefore, in the packet transmission system 10 shown in FIG. 1, a plurality of transmission side logical channels 13 ₁ to ₁ 1
Since packet signals can be transmitted in parallel by 3 _n, it is possible to perform high-speed data transmission exceeding the throughput peculiar to the packet switching network 14.

In the above description, the case of transmitting data in one direction was described, but it goes without saying that the same applies to the case of transmitting data in both directions.

[0018]

Since the present invention is configured as described above, it has the following effects.

By having a packet distribution unit between the packet generation unit group and the transmission side logical channel group and a packet collection unit between the reception side logical channel group and the data reconstruction unit group, the packet distribution unit Since a single packet signal can be divided into multiple parts for simultaneous transmission via multiple sender logical channels and multiple receiver logical channels, the packet signal transfer rate is limited by the throughput of the packet switching network. Never.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a packet transmission system of the present invention.

FIG. 2 is a block diagram showing a conventional example of a packet transmission system of this type.

[Explanation of symbols]

10 packet transmission system 11 ₁ , 11 ₂ , 11 _n data generator 12 ₁ , 12 ₂ , 12 _n packet generator 13 ₁ , 13 ₂ , 13 _n sender logical channel 14 packet switching network 15 ₁ , 15 ₂ , 15 _m Receiving side logical channels 16 ₁ , 16 ₂ , 16 _m Data reconstructing unit 17 ₁ , 17 ₂ , 17 _m Data receiving unit 18 Packet distributing unit 19 Packet collecting unit

Claims (2)

[Claims] 1. A data generating unit group in which a data stream is generated, a packet generating unit group in which a packet signal is generated from the data stream generated in each data generating unit, and a packet generating unit in each packet generating unit. Group of transmitting logical channels to which the packet signals thus transmitted are respectively transmitted, a packet switching network to which the packet signals are inputted from the respective transmitting side logical channels, and a reception to which the packet signals are respectively inputted from the packet switching network Side logical channel group, a data reconstructing unit group in which the data stream is reconstructed from the packet signal input from each receiving logical channel, and the data stream reconstructed in each data reconstructing unit In a packet transmission system including a data receiving unit group for receiving A packet distribution unit provided between the group of units and the transmission side logical channel group for distributing the packet signal generated by each of the packet generation units to a plurality of the transmission side logical channels; and the reception side logic. A packet transmission system, comprising: a packet collection unit provided between a channel group and the data reconstruction unit group, for collecting packet signals respectively inputted from the reception side logical channel group. 2. The packet transmission system according to claim 1, wherein the data stream is transmitted and received bidirectionally.